Frequencies for intr_vxm variable in fmli132 dataset :

   intr_vxm |      Freq.     Percent        Cum.
------------+-----------------------------------
          A |      5,411       80.02       80.02
          D |      1,303       19.27       99.29
          T |         48        0.71      100.00
------------+-----------------------------------
      Total |      6,762      100.00

by Jean Roth , jroth@nber.org , 17 Mar 2016